1. Assembly Scenarios Draft 1 MODEL simulation based on CXUO-CRY-AP-001

2. 1.LAYOUT AND SUPPORT CONDITIONS The overall layout of the Cuore experiment is shown in fig. 1. Figure 1: CUORE experiment overall layout. The cryostat vessels and screens are shown both in their final position and in the opening position. Layout and support conditions

3. 1.LAYOUT AND SUPPORT CONDITIONS The overall layout of the Cuore experiment is shown in fig. 1. Figure 1: CUORE experiment overall layout. The cryostat vessels and screens are shown both in their final position and in the opening position. Layout and support conditions

4. SCENARIO1Initial installation ACTIVITY1.1 Initial cryostat setup Sequential tasksDetailed procedure Tools, prerequisites and notes 1.1.1Installation of 300K flange Lift up the 300K flange from the ground floor and connect the three supports to the MSP, leveling SMP + additional platform, CLS. Access to the MSP top 1.1.2Installation of 40K plate Install the three first segments of the STILL shield suspension rods on the 300K flange, lift up the 40K flange from the ground floor and connect the three suspension rods SMP + additional platform, CLS. 1.1.4Installation of the 4k flange Install the three second segments of the STILL shield suspension rods on the 40K plate, lift up the 4K flange from the ground floor and connect the three suspension rods. Connect the vacuum feedthroughs of the suspension rods to the 4K flange SMP + additional platform, CLS. 1.1.5Installation of the STILL plate Install the three third segments of the STILL shield suspension rods on the 4K flange, lift up the STILL plate from the ground floor and connect the three suspension rods SMP + additional platform, CLS. 1.1.6Installation of the HEX plate Install the three tie rods on the STILL plate, lift up the HEX plate from the ground floor and connect the three tie rods SMP + additional platform, CLS. 1.1.7Installation of the MC plate Install the three tie rods on the HEX plate, lift up the MC plate from the ground floor and connect the three tie rods SMP + additional platform, CLS. Scenario 1.1 Initial installation

5. SCENARIO1Initial installation ACTIVITY1.2 dry assembly of the cryostat vessels/screens (check procedure, clearances and all related mechanical issues, commissioning of handling tools) Sequential tasksDetailed procedure Tools, prerequisites and notes 1.2.1Installation of the MC top screen segment Set the MC top screen segment on the SMP, install the lifting collars, lift it up and fix it to the MC plate, remove the collars SMP, CLS 1.2.2Installation of the MC dummy screen Set the MC dummy screen on the SMP, install the lifting collars, lift it up and fix it to the MC screen top segment, remove the collars SMP, CLS 1.2.3Installation of the HEX screen Set the HEX screen on the SMP, install the lifting collars, lift up and fix it to the HEX plate, remove the collars SMP, CLS 1.2.4Installation of the STILL screen Set the STILL screen on the SMP, install the lifting collars, lift up and fix it to the STILL plate, remove the collars SMP, CLS. Note that the STILL shield support structure is not installed 1.2.5Installation of the 4K vessel Set the 4K vessel on the SMP, install the lifting collars, lift up and fix it to the 4K flange, remove the collars SMP, CLS. 1.2.6Installation of the 40K screen Set the 40K screen on the SMP, install the lifting collars, lift up and fix it to the 40K plate, remove the collars SMP, CLS 1.2.7Installation of the 300K vessel Set the 300K vessel on the SMP, install the lifting collars, lift up and fix it to the 300K flange, remove the collars SMP, CLS. Scenario 1.2 Initial installation cont’d

6. Scenario 2.1 Integration of internal components(1)(2) 2.1.1Installation of the Dilution Unit Install the DU insert into the cryostat. Connect the thermalizations at the various temperature stages. Connect the services Cavern crane and/or top screen handling system. The DU services should be in place 2.1.2Installation of the pulse tubes Install the pulse tubes on the cryostat. the thermalizations at the various temperature stages. Connect the services Crane? 2.1.3Installation of the wire and source vacuum feed- throughs Installation of the wire and source vacuum feed-throughs. Install blind flanges on the source tubes ports of the 300K flange 2.1.4Installation of fast cooling system Installation of fast cooling system connections to the 4K flanges and the valves/connection on the 300K flange. The fast cooling services should be in place 2.1.5Installation of the wiring system from PP1 to PP2 Install the PP1 wire inserts and PP1 bords. Connect the thermalization stages at the STILL and HEX flanges 2.1.6Install the detector suspensions Install the first attenuation stage, the Y support structure and the detector suspension rods. Connect the vacuum feed-throughs and the thermalizations at the various stages Cavern crane 2.1.7Install the top lead shield suspensions Install the top lead shield suspension rods. Connect the vacuum feed- throughs and the thermalizations at the various stages 2.1.8 (3)Install the STILL lead shield suspensions Install the STILL lead shield suspension rods. Connect the vacuum feed-throughs and the thermalizations at the various stages

7. Scenario 2.2 Installation of the internal shielding 2.2.1Installation of top lead annular shield This shield is split in pieces which can be manipulated by hands. No special tool is required 2.2.2Installation of top lead shield Install the Kevlar section of the suspensions. Prepare the lead shield assembly on the SMP. Lift it up to the correct height. Connect the suspensions. Transfer the load and level the assembly by adjusting the suspensions SMP + extension platform 2.2.3Installation of the MC top screen segment Install the MC top screen segment by means of the lifting collars, lift it up and fix it to the MC plate, remove the collars SMP, CLS 2.2.4Installation of the internal source tubes 2.2.5Installation of dummy detector (4) Proceed as for point 2.2.2. Add the thermalizations between the dummy tower support plate and SMP + extension platform 2.2.6Installation of the shield around the STILL screen Set the shielding support structure with the lead shield on it over the SMP. Dummy DU, HEX and STILL screens in place (installed following 1.2.2-4) 2.2.7Installation of the external source tubes Installation of the external source tubes outside the STILL screen 2.2.8Installation of the remaining vessels/screens Follow 1.2.5-7SMP, CLS

8. Scenario 3 Detector installation 3.1Lower the vessels/screens Lower the vessels/screens into their parking position inside the lower external shielding Setting of the lateral and lower external shielding on the SMP. CLS Install Anti radon seal at 300K flange. Install flexible anti radon shield between floor of electronics room and 300K flange. Should not transmit vibration to 300K flange. Bolt pattern in 300K flange Bolt pattern in electronics floor. 3.3.1Secure sensitive items.Store Radon sensitive items (e.g. CUORE spare parts or tools) in special storage area to prevent contamination in case anti- radon control lost. Radon free area, Parts Storage area, etc. 3.3.2Purge cryostat area of Radon gas Open doors to radon free area, possibly redirect output of anti-radon system exclusively to cryostat area Anti-radon system 3.3.3Locate detector under 300K flange Move the detector on the installed rails from the radon free area into the cryostat area Detector support N2 purge container Rail system 3.3.4Transfer detector LoadRaise detector and transfer load to suspension system without stopping or modifying detector N2 purge system. Temporary Detector support N2 purge container Rail system 3.3.5Install anti-sway systemInstall temporary system to keep detector from swaying as a pendulium but still allow vertical movement. Temporary Detector support Anti sway system N2 purge container 3.3.6Remove detector support Remove device used to install detector to Cryostat. Anti sway system N2 purge container 3.2Close 1 st floor opening and install the detector installation rails Detector rail system available.

9. Scenario 3 Detector installation Cont’d 3.3.7Check calibration system Visual check to make sure calibration system tubes line up properly Anti sway system N2 purge container Tool(?) to validate calibration system ok. 3.3.8Attach mylar signal tapes Route mylar signal tapes to connections at 4K flange. Anti sway system N2 purge container 3.3.9QA/QC tests on signal/heater connectios Use device to make sure that signal and heater connections are properly made. Anti sway system N2 purge container Continuous diagnostic of signal/heater connections during assembly. 3.3.10QA/QC tests on Calibration system Perform QA/QC tests on calibration system as needed to verify operational readiness. Calibration system (How long does this take given slow motion of calibration system?) 3.3.11Repair towers?On the basis of QA/QC tests, repair towers or calibration system See separate repair procedure.

10. Scenario 4 Install Cryostat vessels and thermal shields 4.1 Purge vessels Purge the volume between the vessels and the temporary floor of the clean room with N2 or radon free air. If N2, must consider oxygen deficiency issues. Flexible anti-radon barrier between floor and vessels N2 or radon-free air 4.2Remove temporary Floor Remove the temporary floor after the volume below has been purged. Tools to remove radon seal around temporary floor and place to store floor 4.3Remove N2 shield around detector Remove the N2 shield around the detector Tools to remove N2 shield 4.4Raise 10mK shieldUse lifting platform to install 10mK shield and attach to cold plate. Lifting platform Vessel hoist system 4.5Raise HEX shieldUse lifting platform to install ~50mK shield and attach to ?? Lifting platform Vessel hoist system 4.6Flush HeX shield with N2 Use tube starting from 4K flange that goes through ~ 50mk shield to flush detector with N2 gas. Gas flow can be removed after 4k IVC installed and pumped down. Need special ~6mm dia tube to flush 50mK shield with N2. Should attach to 4K flange to avoid interference during installation of other shields. Is there a problem with the heat load on the detector if this N2 line is installed ?(it will be permanent) 4.7Install Still ShieldInstall Still shield using platform and hoist. Hoists and platform 4.8Perform QA/QC electrical/electro nic systems Perform electrical tests on detector.Automatic debugging device to insure signal continuity.

11. Scenario 4 Install Cryostat vessels and thermal shields Cont’d 4.9Perform QA/QC tests on calibration system. Perform QA/QC tests on calibration system to insure integrity of system. Assumes DCS is operational, and can move sources quickly for debug testing. 4.10Reinstall temporary floor in clean room and seal Install the temporary floor in the clean room in preparation to change the platform & vessels below. N.B.: temporary floor cannot be supported by vessels below, other wise cannot maintain anti-radon seal. Temporary floor 4.11Remove anti-radon flexible accordion shield Disconnect the flexible anti-radon shield below the clean room floor. Should store with vessels. Tools, access to bottom of clean room floor to remove fasteners. 4.12remove vessel platformMove the vessel platform to the side in preparation for main platform with remaining shields and Pb shield. 2 nd rail system for vessel platform 4.13Install main platformMove main lifting platform with remaining vessels into place under cryostat. Main lifting platform 4.14Install accordion radon barrier Install flexiable accordion radon barrier between clean room floor and top of Pb shield. Flexible anti radon barrier. Access to fasteners at bottom of clean room floor. 4.15Purge volume below floor Purge the volume below the floor with N2 gas or Radon free air. N2 purge or Radon free air supply 4.16Remove temporary floor Remove radon seal and temporary floor in clean room above vessels. Space to store temporary floor 4.17Install 4K shieldUse platform and hoists to raise 4k vessel Lifting platfrorm and hoists. 4.18Stop N2 flow to detector Stop N2 flow to detector and pull vacuum on 4K vessel for vacuum test AND to protect detector from radon Can 4k IVC be pumped down with air on the outside, vacuum on the inside? Lifting platform, hoists, vacuum system. Assumes we can pump on the 4k shield during installation w/o safety issues. 4.19Install 40K shieldUse hoists and platform to install 40K shield. Assumes we can pump on the 4k shield during installation w/o safety issues.

12. Scenario 4 Install Cryostat vessels and thermal shields Cont’d 4.20Install 300K vesselUse hoists and Platform to install 300K vessel (OVC) Lifting platform and hoists Assumes we can continue to pump on the 4k shield during installation w/o safety issues 4.21QA/QC tests on detector Repeat QA/QC tests on detector electronics See separate procedure 4.22QA/QC tests on DCSPerform QA/QC tests on DCSSee separate procedure. 4.23QA/QC tests on Cryostat Perform QA/QC tests on Cryostat, including pump down & cooling See separate procedure. 4.24Raise ~80T Pb shieldRaise 80T Pb shield using lifting jacksSee separate procedure. (Is detector pumped down, or backfilled with N2 for this step?) 4.25Attach E. Room Faraday cage to external surface of cryostat. Make connection between Electronics room Faraday cage and Faraday cage on outside of Pb shield. This could be “automatic” when the shield is raised. Access space at ceiling of clean room to make connection if not “automatic.” 4.26Create Radon shield at top of detector Install anti-radon shield at top of detector to limit radon infiltration inside Pb shield during detector operations. N2 or “radon-free” air. Access space at ceiling of clean room to make connection if not “automatic.” Potential safety issues with oxygen deficient volume. 4.27Turn on purge gasTurn on gas to purge inside of Pb shield (N2 or radon free air) Potential safety issues with oxygen deficient volume.